Prolouge

When Osamu Dazai left the Mafia, he didn't look back once. The pain Chuuya felt was well known all around the Port mafia, but there was one person closer with Dazai who showed no emotion at his betrayal.

Hina Dazai was never one to show her feelings. She always bottled up here feelings and used them to fight. So when her brother left her behind in a Mafia, she showed nothing. Taking up his monomer as "the demon prodigy", Hina began hiding her emotions and showing no mercy.

When Hina is sent on a mission to work with the Armed detective agency, how will she react to seeing the brother who left her in that hell again?